| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Metals: Microstructure, Properties and Alloy Development
|
| Presentation Title |
En-Situ Alloying by Powder Bed Doping to form Functionally Graded Materials with LPBF |
| Author(s) |
McKay Sperry, David Carter, Nathan Crane |
| On-Site Speaker (Planned) |
Nathan Crane |
| Abstract Scope |
Laser Powder Bed Fusion (LPBF) is an important Additive Manufacturing (AM) method due to excellent spatial resolution, surface finish, and material properties without extensive post-processing. One benefit of AM is the ability to combine multiple components into a single part to reduce machining and assembly time, and minimize material waste in a practice called functional integration. A challenge with functionally integrated designs is that different parts of an assembly often require different properties. To address this challenge, small quantities of alloy materials can be added to specific regions of the powder bed via liquid carrier prior to fusion. This study reports on the impact of carbon black ink added to select regions of a Stainless Steel 316L powder bed. The resulting property changes include a hardness increase of over 50%. The potential application of dissolvable supports is also explored, as the corrosion resistance of the modified material is significantly decreased. |